Tire-inflation nozzle.



paaren GUMLES T. WXLLALVIS, F

mma

TRENTON, NEW JERSEY.

TlIR'E-IENFLATIN NOZZLE.

Application filed March 16,

Y 10 all whom it may concern.'

Be it known that l, @munis T. WILLIAMS, of Trenton, in the county of Mercer, and in the State of N ew Jersey, have invented a certain new and useful improvement in Tire-inflation Nozzles, and do hereby declare that the following is a tull, clear, and exact description thereof.

My invention relates particularly to an apparatus designed to be attached to an air line for connection to the nipple of a tire when the same is being inflated.

rlhe object oi my invention is to provide an apparatus ot this kind, in which there is an electric motor provided for pumping the compressed air, whifh motor, however, is started automaticallyby the closinna of its circuit only when the apparatusl has been applied to the unipple of the tire to 'be inlated, the parts being locked against the closing of the circuit until the nozzle has v been sov applied. Another object ci my invention is to provide an apparatus ot this kind in' which the tire cannot be inflated beyond a predetermined. pressure, and in which after thel predetermined pressure is reached any further air provided lby the forcing` apparatus is exhausted, the exhaust thus indicating the completion ot the intlation ci the tire.

While my invention is capable oi embodiment in many diiierent'torms, for the purpose of illustration l have shown only one bil form thereof in the accompanying drawings, in which,

Figure 1 is a plan view oi an apparatus made in accordance with my invention.;

Fig. 2 is a detailed section on line 2-2 of Fig. 1 of the portion thereof to be applied to the nozzle ot the tire valve; and

Fig. 3 is a section ci the apparatus taken on luie SMB of lig. 1 and showing the pressure regulating device.

in the drawings '.l have shown an electric motor-1, which is connected byl a crank 2 with a piston 3 in an air pump d. This air pump a is arranged to supply an air tank 5 with compressed air. lllrom the air tank 5, a flexible hose 6 leads-to a nipple 7. This nipple 7 is connected to a barrel 8, ending inca cylinder 9. Extendin trom the barrel 8 there is a tube 10, whisluis screwthreaded into said barrel, and which has a hollow pin 11 extending trom its end to cpenthe plunger Specication of Letters l'atent.

The 'end of this catch 'or some other conducting material.

- the porcelain Patented July 2, 11218@ 1915. Serial No. 111,791.

valve in the tire nipple when the apparatus is applied to the tire to inflate the same. An opening 12 is located in the side of the pin 11 to permit the entry ot air from the air supplying means to the tire. end ci the tube around the pin 11 there is provided an annular abutment 13, which is larger in diameter than the tube 10, the purpose of said abutment being to support on one face thereof a rubber or leather washer 14 and to hold against its other ace an inwardly directed flange 15 on va sleeve 16, which is adapted to be rotated by hand to screw the apparatus on and unscrew the apparatus from the tire nipple when the same is to be inflated. Screw-threaded into @n the dit the end of the sleeve 416 there is an internally andeXternally screw-threaded head 17 the interior screw-thread of which is 4 provided for screwing the same on to the nipple of the tire when the latter is to be iniiated. Illhe interior screw-thread on the head 17 is recessed, however, to receive a spring catch' 18 supported by means of a screw 19 upon the bottom of the head 17. 18 is arranged to tall within a notch 20 on theabutment 13 so as to prevent the sleeve 16 from being turned except when the apparatus has been screwed on to the nipple of the tire. rlhe interior screw-thread in the head 17 has a righthanded screw-thread. Upon the exterior ot the tube 10 there is a left-handed screwthread to receive a recessed ring 21 having pins 22 which move in slots 23 in the body of the sleeve 16. This ring 21 carries a porcelain or rubber band 24, which has a dovetailedrecess 25 in which there is located a circular contact member 26 made of metal A This contact member 26 is arranged to complete the circuit between two screws 27, which extend into a block. of porcelain or other nonconducting material 28 and hold in place therein two wire terminals 29 and 30 which tit within recesses 31 and 32 provided in block 28. A hole 33 passes through the body of the block 28 and a recess 34: is provided upon its under 'surface so that the block may pass over the barrel 8, and also over the tube 10. Within the cylinder ing a head 36 and longitudinal passageways 36m. Around the-valve t5 and underneath tti ica 9 there is arranged a valve 35 havv the,escape of air E have the head 36 there is a washer 37 inade oi' rubber or leather. Around the valve and beneath the washer 3? there is a piston 38 having a-screw-thrcaded sleeve 39 attached thereto, which is adapted to lit against the Washer 37, where it is normally retained in place by a soring ring 40 having arms Ll-l which entend upwardly and over the top oi' the headk 36, the spring ring 4:0 being Screwthreacled to the sleeve 39. A cup washer 4:2 made of leather or any other similarniaterial is supported upon the 'top oi" the plunger 38 so as to prevent around the edges of the plunger 38. Beneath the plunger 38, there is aspring lf3 which is retained within the cylinder 9' by a head il screw-threaded into the end of the cylinder 9. The head j 44 is also" screw-threaded internally so 'as yat to receive a screw-threaded stop t5 having pins 4:6 thereon to limit the movement oi'v the same within the head #las The stop l5 has, vfurthefniore, a flange i7 on its outer end, to Whichthere is connected a spring i8 by means of screws e9, one end of the spring extending along the side of the cylinder 9, and being provided with pro- Jection 50 to register with correspondiiig., recesses 51 in the exterior of the barrel. Qpposite each of the recesses 5l there is a member 52 to indicate the nun'iber ci' pounds to Whiehthe tire is to be inflated rlfhe cylinder. 9 is provided wito. vent 58 to permit the escape of the excess air.,

in the operation oi my inventionewhen it is desired to inflate a tire, the parte would be 1n the position as shown in Fig. 2, with the circuit, including the motor l broken, as the conducting .ring is out contact with the screws 2'?. When new the apparatus is applied to the nipple of the tire by screwing; the heed l? on to the saine, the nipple on the tire forces the catch i8 to one side thereby disengaeing the same froiii the recess 20, so that the s eeve lo can be rotated until the nipple of the tire becomes seated against the washer i4. Simultaneously, owing to the fact that the screw-thread upon the exterior of the tube i0 is the opposite of that in the interior 0i the head 1?, the rinoA 2l isgnradualiy moved toward the ends oft the screws 2i' until the conducting ring" 26 completes the circuit between the screws', thus' causing' them@ tor l to operate. The operation of the ni s tor provides' compressed sir to t 5, which in turn conveys the air the i. 6 to the nozzle Y and `thence trough theA barrel 8 and 'the tube l() until it reaches the outlet opening l2 from which it passes into the nipple on the tire. The compressed air is thus conveyed by the apparatus into the tire until the desired pressure. determined by the previous adjustment of the stop e5 opposite the desired recess' 51 with its corN responding pressure, is attained. lhere abe crease of pressure to supplyoompressed air to after the increase in pressure will cause the plunger 38 to inove downwardly, thereby uncovering the passageways located in the interior of the valve 35, as the part 89 will become unseated from the wz sher 37. The air will now pass through the passagevvfays in the valve 35 and out from the cylinder 9 through the vent As soon as the 'air begins to escape from the vont .53, the operator will know that the tire has been en tirely inflated andthe apparatus is then un-A screwed from the tire nipple. .i-'is the ap paratus is unscrewed from the nipple, the circuit is again broken owing to the travel of the conducting ring- 3G alongthe tube 10 and away from the screws Sfr', and when the apparatus has been entirely unscrcwiul from the nipple, the spring catch 18 will enter the recess 20 thereby locking the parts in position. and preventing the completion oi the motor circuit until the apparatus is again screwed on to a tire nipple.

lWhile l have described above inv detail, l wish it to be understood that many changes may be made therein Without departing from the spirit of my in" vention.

'lf claim:

l. ln combination, a device for connecting` air supply` apparatus to a tiro airsinlet valve, s release for excessive pressure eomprisiiu.;` an air-releasinea device movable with thc inand a. stop cooperating therewith to release the air, a motor-operated air-pump to supply connues-sed air to the tire and means to start the motor by the application of the device to the tire valve.

in combination, a device for connect ingr air supply apparatus to a tire air-inlet niy .invention valve, release for excessive pressure eommovable with.

j .irising an air-releasing; device increase of pressure, and an adjustable stop cooperating therewith to release the air, a inotoreop'crated.air-pu1np to .supply compressed air to the tire and means to start the motor by the application of the device to the tire valve.

lin combination, a device for connect-ing air supply apparatus to a tire air-inlet valve, a release for excessive pressure comprising; an air-releasing piston andd valve movable with the increase of pressure, and a stop .o operating therewith to release the air, a nio tor-operated air-pump to supply eonujiressed air to the tire and means to start the motor by the application of the device to the tire valve.

il. lu combination, a device for connectzing air supply apparatus to. a tire air-.inlet valve, a release for evcessive pressure coniprisingr an air-releasing piston and valve movable with the increase of pressure, and an adjustable stop cooperating therewith to release the air, a motor-operated air-pump the tire and All iat/ace means to .start the motor b tlie application olf tbe device to tlie tire va ve.

5. ln combination, a device for connecting air supply apparatus to a tire air-inlet valve, a release for excessive pressure :comprising an air-releasing device movable with the increase' ot pressure and a stop cooperating therewith to release the air, an electricmotor-operated air-pump to supply compressed air to the tire, and. means to start by lthe application of the device to the tire valve comprising a circuit breaker.

6. ln combination, a device for connecting air supply apparatus to a, tire air-inlet valve, a release for excessive pressure comprising an air-releasing device movable with the in crease of pressure, and an adjustable stop coperating therewith to release the air, an electric motor-operated air-pump to supply eci'npressed air to the tire and means to start the motor by tbc application of the device to the tire valve comprising a .circuit breaker.

Y, ln combination, a device tor connecting,r air supply apparatus to a tire air-inlet valve, a release for excessive pressure comprising an airreleasinp," piston and valve movable with tlie increase or pressure, and a stop co'noenitinla, tlierewitli to release the air, an electric motor-operated air-pump to supplyl c presa/i air to the tire, and means to start the moto-r by the application ol' the device to the tire valve comprising a circuit breaker.

8. ln combination, a device for connecting air supply apparatus to a tire air-inlet valve, a release tor excessive pressure comprising an air-releasing piston and valve movable with the increase of pressure, and an adjustable stop cooperating therewith to release the air, an electric motoroperated air-pump to supply compressed air to the tire and means to start tbe motor by the application et tlie device to the tire valve, comprising a circuit breaker.

9. ln combination, a motor-operated airpump, a device for connecting the same to a tire air-inlet valve, and means operated by the application of the device to the valve to start the motor.

i 10. ln combination, an electric motor-operated air-pump, a device tor connecting the same to a tire air-inlet valve', and circuit breaking and making means operated by the application of tbe device to the valve to start the motor.

11. ln combination, a motoroperated airpump, a "device for connecting the same to a tirel airdnlet valve, and means operated by tbe application of the device to the valve tc start the motor comprising, a rotary sleeve to screw the device onto the air valve.

l2. ln combination, an electric motor-op 'erated air-pump, a device for connecting tbe same to a tire air-inlet valve, and circuit breaking; and making means operated by tbc the motor erated air-pump, a device application ot the device to the valve to start the motor comprising a rotary sleeve to screw the device onto the air valve.

18. In combination, an electric motoroperated air-pump, a device tor connecting the same to a tire air-inlet valve, and circuit breaking and making means operated by the application of the device to the valve to start the motor comprising Va rotary sleeve to screw the device into the air valve, and a circuit breaker movable toward its closed position as the sleeve is screwed onto the air valve.

14. ln combination, a motor-operated airpump, a device for connecting the same to a tire air-inlet valve, and means operated by the application of the-device to the valve to start the motor comprising a rotary sleeve to screw the device onto tbe air valve, and an automatic lock lfor the sleeve when the device is withdrawn from the air valve.

15. lin combination, an electric motor-operated air-pump, a device for connecting the same to a tire air-inlet valve, and circuit breaking; and making means operated by the application ot the device to the valve to start the motor comprisin a rotary sleeve to screw the device onto t e air valve, and an automatic lock for the, sleeve when the device is Withdrawn from the air valve.

16. 1n combination, an electric motor-operated air-pump, a device forconnecting the same to a tire air-inlet valve, .and circuit breakin and making means operated by the app ication of the device to the valve to start the motor comprising a rotary sleeve to screw the device onto the air valve, a circuit breaker movable toward its closed position as the sleeve, is screwed onto the air valve, and an automatic lock for the sleeve when the device is withdrawn from'tlie air valve.

17. ln combination, a motor-operated airpump, a device for connecting the same to a tire air-inlet valve, and means operated by the application of the device to the valve to start the motor comprisin a rotary sleeve to screw the device onto te air valve, and

an` automatic spring lock for the sleeve when' the device is withdrawn from the air valve.

18. ln combination, an electric motor-optor connecting the same to a tire air-inlet valve, breaking and making means operated by the application of the device to thevalve to start the motor comprising a rotary sleeve to screw the device onto the air valve, and an automatic spring lock for tbe sleeve when the device is withdrawn from the air valve.

19. ln combination, an electric motor-operated air-pump, a device for connecting the same to a tire air-inlet valve, and circuit breaking` and making means operated by tbe application Mld lllll and circuit of the device to the l'valve to start the motor comprising arotary sleeve to screw the device onto the air valve, a

termina] hlmck ab :-1l am decimi@ uwwrmp- 'Y 1;"Lp, a (1Q vice for Connecting the rwiue; valve und circuit; f an@ mnfiing naam Op@ Med by the of the device to the valve to umm? fJomprirsng L rotary sleeve ,1u device. out@ ih@ :lr vulve, :1y Cr- "mi brew-:QV nmvufbc: mwa d its Closed posi- 'bne Skim/e is screwed onto the :mir 1 aut01;1.1 spring 100k for the Sleeve c ,Cvf-e is; wthd zuvn from the uil' am( au nsulatiug circuit, terminal nchec?. i0 the device :un Coperatng ,e circuit breaker. that daim. the foregoing c nerc'im'o Set my hzul.

CURLES T. WTLLLIAIVES.

Mock. atigashe. 1. s wh the Cirami?! f'f" 2L Combi MMA? el aix-9u@ t@ serva-J cm1?, mm as 

